EP2856917A1 - Brewing module - Google Patents

Brewing module Download PDF

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Publication number
EP2856917A1
EP2856917A1 EP13186920.8A EP13186920A EP2856917A1 EP 2856917 A1 EP2856917 A1 EP 2856917A1 EP 13186920 A EP13186920 A EP 13186920A EP 2856917 A1 EP2856917 A1 EP 2856917A1
Authority
EP
European Patent Office
Prior art keywords
capsule
brewing
brewing module
characterized
module part
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP13186920.8A
Other languages
German (de)
French (fr)
Inventor
Andreas Rubin
Dominic Zwicker
Louis Deuber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qbo Coffee GmbH
Original Assignee
Luna Technology Systems LTS GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Luna Technology Systems LTS GmbH filed Critical Luna Technology Systems LTS GmbH
Priority to EP13186920.8A priority Critical patent/EP2856917A1/en
Publication of EP2856917A1 publication Critical patent/EP2856917A1/en
Application status is Withdrawn legal-status Critical

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    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47JKITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J31/00Apparatus for making beverages
    • A47J31/24Coffee-making apparatus in which hot water is passed through the filter under pressure, i.e. in which the coffee grounds are extracted under pressure
    • A47J31/34Coffee-making apparatus in which hot water is passed through the filter under pressure, i.e. in which the coffee grounds are extracted under pressure with hot water under liquid pressure
    • A47J31/36Coffee-making apparatus in which hot water is passed through the filter under pressure, i.e. in which the coffee grounds are extracted under pressure with hot water under liquid pressure with mechanical pressure-producing means
    • A47J31/3604Coffee-making apparatus in which hot water is passed through the filter under pressure, i.e. in which the coffee grounds are extracted under pressure with hot water under liquid pressure with mechanical pressure-producing means with a mechanism arranged to move the brewing chamber between loading, infusing and ejecting stations
    • A47J31/3623Cartridges being employed
    • A47J31/3633Means to perform transfer from a loading position to an infusing position
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
    • A23FCOFFEE; TEA; THEIR SUBSTITUTES; MANUFACTURE, PREPARATION, OR INFUSION THEREOF
    • A23F3/00Tea; Tea substitutes; Preparations thereof
    • A23F3/16Tea extraction; Tea extracts; Treating tea extract; Making instant tea
    • A23F3/18Extraction of water soluble tea constituents
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
    • A23FCOFFEE; TEA; THEIR SUBSTITUTES; MANUFACTURE, PREPARATION, OR INFUSION THEREOF
    • A23F5/00Coffee; Coffee substitutes; Preparations thereof
    • A23F5/24Extraction of coffee; Coffee extracts; Making instant coffee
    • A23F5/26Extraction of water-soluble constituents
    • A23F5/262Extraction of water-soluble constituents the extraction liquid flows through a stationary bed of solid substances, e.g. in percolation columns
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47JKITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J31/00Apparatus for making beverages
    • A47J31/24Coffee-making apparatus in which hot water is passed through the filter under pressure, i.e. in which the coffee grounds are extracted under pressure
    • A47J31/34Coffee-making apparatus in which hot water is passed through the filter under pressure, i.e. in which the coffee grounds are extracted under pressure with hot water under liquid pressure
    • A47J31/36Coffee-making apparatus in which hot water is passed through the filter under pressure, i.e. in which the coffee grounds are extracted under pressure with hot water under liquid pressure with mechanical pressure-producing means
    • A47J31/3604Coffee-making apparatus in which hot water is passed through the filter under pressure, i.e. in which the coffee grounds are extracted under pressure with hot water under liquid pressure with mechanical pressure-producing means with a mechanism arranged to move the brewing chamber between loading, infusing and ejecting stations
    • A47J31/3623Cartridges being employed
    • A47J31/3638Means to eject the cartridge after brewing

Abstract

A brewing module for an extraction device has a first brewing module part (3) and a second brewing module part (5) which can be moved relative to this. The first and second brewing module parts form a discharge device for discharging an extraction product from a capsule with extraction material for the preparation of brewed beverages and an injector for introducing an extraction liquid into the capsule. The first brewing module part has a head (30) with lateral guide means (31) defining a first track (33) and a second track (36) for a capsule collar. The first brewing module part (3) further forms a support (35) which limits downward movement of the capsule when the capsule collar is on the first path. The lateral guide means (31) are rigidly connected to the head, and the second brewing module part has return means (61) adapted to engage the capsule collar (21) upon opening the brewing chamber and feed it into the second path (36) move.

Description

  • The invention relates to extraction devices for preparing beverages or the like from an extraction material contained in a capsule, for example ground coffee. It relates in particular to a brewing module for an extraction device and to an extraction device having such a brewing module.
  • Extraction devices for preparing beverages or the like from an extraction material present in a portion packaging are known, inter alia, as coffee or espresso machines. In many corresponding systems, the portion packages are designed as capsules, in which the extraction material, for example, is airtight. For extraction, the capsule is pierced, for example on two opposite sides. On the first side then an extraction liquid - generally hot water - is introduced. On the second side, the extraction product is discharged from the capsule. This happens in a so-called brewing module. Such has a brewing chamber in which the capsule is received. Particularly popular are brewing modules in which the capsule is inserted and the brewing chamber, for example, is closed by means of an operating lever, the capsule being automatically removed from the brewing chamber and ejected into a capsule container when the brewing chamber is opened again after the brewing process. Such brewing modules with automatic capsule ejection are generally designed as horizontal brewing modules, ie the capsule is inserted from above, the closure of the brewing chamber is a horizontal relative movement of two brewing chamber parts, the brewing liquid flows in the Essentially horizontal, and the capsule container is formed below the brewing chamber.
  • In the case of brewing modules of this type, it must be ensured that the inserted capsule is held until the brewing chamber is closed, but that it falls down when the brewing chamber is opened again after the brewing process. The WO 2008/014830 shows - for substantially cup-shaped capsules with a laterally projecting collar - a possible way how this can be effected. The brewing module described there has lateral holding arms on a brewing module part. In the holding arms first and second guide grooves are formed. When inserting the collar is guided by the first guide grooves on both sides, said first guide grooves down a boundary, through which the inserted capsule is stopped. When closing the brewing chamber, the holding arms are swung away to the side so that their connection to the capsule collar is completely released. The capsule is held in this state by being held in a cup-like configuration of the other brewing module part. Upon reopening the brewing chamber, the retaining arms are pivoted back inwardly, re-engage the capsule, and act as return means by a return tab moving the capsule collar into the second guide grooves. These are open at the bottom, so that the capsule falls down as soon as the brewing chamber is fully open.
  • This solution requires that a relatively pronounced lateral collar is present. Moreover, it is relatively complex to realize.
  • The EP 2 105 074 shows a brewing module with a positioning unit, which also with the one brewing module connected and mitbewegte holding jaws with guide grooves through which the capsule collar when inserting laterally to be led. The guide grooves in this case form a guide channel, which tapers downwards and is designed to be clamping at the lower end. When closing the brewing chamber, the collar abuts against a retaining edge of the other brewing module part and as a result thereof is bent over or folded over and thus released from the guide grooves. An undercut of the holding jaws supported when opening the brewing chamber after brewing the ejection of the capsule.
  • Also, this solution requires a relatively pronounced lateral collar, which also - in an axial direction - must be deformable. It is therefore not suitable for all capsule types.
  • Starting from the prior art, the invention has the object to provide a brewing module for an extraction device, such as a coffee machine, for portionwise preparation of a beverage or other extraction product from a packed in a capsule extraction material, overcomes the disadvantages of existing brewing modules and the a simple and compact design and a great flexibility in the capsule design allows. The brewing module should in particular be suitable for horizontal installation and preferably also for large brewing pressures of more than 10 bar, for example up to 20 bar, and also significantly lower brewing pressures of bpsw. 1 bar are not excluded.
  • According to a first aspect, the brewing module has a first brewing module part and a second brewing module part movable relative thereto, the first and the second brewing module part forming a discharge device for discharging an extraction product from the capsule and an injector for introducing an extraction liquid into the capsule, for example the first brewing module part the discharge device and the second brewing module part of the injector - or vice versa. In a closed position (the first and second brewing module part If, for example, "together"), a brewing chamber is closed, which at least partially surrounds the capsule during the brewing process.
  • In order to open and close the brewing chamber, the second brewing module part can move linearly along an axial direction relative to the first brewing module part - i.e. translational or substantially translational - be movable. A pivoting movement of the brewing module parts relative to each other is not excluded, but generally unnecessary. In particular, in embodiments, the capsule is not actively pivoted when closing the brewing chamber. It may also be provided that the capsule also does not tilt during closure, i. the orientation of the capsule is substantially preserved when closing the brewing chamber.
  • The first brewing module part has a head with lateral (capsule) guiding means. These are attached to the head and connected to it. The lateral guide means define a substantially vertical first path for a capsule collar, which may be formed, for example, by a weld or the like. The guide means each have an outer retention structure in an upper portion of the first track which opposes inward movement of the collar from the first track. In addition, the first brewing module part forms a support, which is formed in the direction of insertion below the web and prevents falling of the capsule down when the capsule collar is guided along the first path. The first path can be formed, for example, by a first guide groove. The support may be formed by a boundary of the first guide - or generally the first track - against bottom.
  • In this text, the terms "inside" and "outside" generally refer to axial directions toward and away from the center of the brewing chamber. Axial directions are Directions along the substantially horizontal axis injector-diverter, which may also correspond to a capsule axis. With respect to this axis, radial-horizontal directions are referred to by the terms "radially inward" and "radially outward". "Up" and "Down" designate the corresponding vertical directions in a proper use of the brewing module, in which the coffee machine with the brewing module is placed on a horizontal surface.
  • The capsule collar may, for example, be a conventional circumferential collar protruding on the plane of one of the end surfaces. However, it may also be less pronounced according to an alternative capsule form and, for example, be designed as a peripheral edge of the weld / sweat brow, for example as it is of capsules in accordance with WO 2010/118543 is known.
  • The second brewing module part has return means which, upon opening the brewing chamber (i.e., moving the first and second brewing module parts apart), engage the collar to move it through the opening movement into the second path.
  • The lateral guide means may, for example, be rigid and rigid, ie substantially immovable relative to the head. This can be particularly favorable in terms of production and maintenance. The lateral guide means, for example, during the entire process remain immovable laterally with respect to the head. Even during the brewing process, the lateral guide means remain in contact with the capsule, for example. When moving out of the first path and optionally across the first pathway into the second path, the capsule is then slightly deformed, for example, by radial Deformation. In particular, the collar, which is dimensionally stable, for example, can virtually be pushed away radially inward.
  • But it is also possible that the lateral guide means against a spring force (a little) are deflected outwards. Then, when moving the capsule relative to the lateral guide means instead of a capsule or in addition thereto, a deflection of the lateral guide means occur.
  • Additionally or alternatively, the return means may remain engaged with the capsule during the brewing process. For example, during the brewing process, the capsule collar can be located in a receptacle formed by the return means, in which it is also moved during the subsequent opening of the brewing chamber until it has entered the second path.
  • Like the lateral guide means, the return means can not laterally be movable but can also be fixed to a housing of the second brewing module part. However, it is possible-regardless of a possible deflectability of the lateral guide means-that the return means are deflectable radially against a spring force.
  • The guide means may, for example, be arranged like a fork on both sides of the capsule and each have a receptacle for the capsule collar. The lateral guide means then have, for example, two guide means each, between which the return means engage in a closed brewing chamber, and / or the return means engage from above and below on the capsule.
  • In an embodiment with the capsule completely enclosing brewing chamber is defined by the enclosing elements of the first and second brewing module part - for example, if necessary, including seal - a Brühkammerinneres. The lateral guide means and / or the return means are then in the closed brewing chamber in the brewing chamber interior - as well as an optionally existing capsule seal.
  • This approach differs from the prior art, according to which the means which the capsule is held after insertion in an intermediate position, must be removed when closing the brewing chamber, for example. By a pivoting movement to the outside or down. The inventive approach thus allows a design with a minimum of moving parts, which is favorable both in terms of reliability and in terms of manufacturing costs.
  • Upon closure of the brewing chamber, the capsule collar may exit the first path through the second brewing module portion, i. to the head of the first Brühmodulteils be moved. In this brewing position, the capsule is pierced by perforation elements of the first brewing module part, even before the brewing process or as a result of the internal pressure built up in the capsule during the brewing process. From this brewing position, the capsule is then pulled out by the return means when opening the collar until it reaches the second path. From there, the capsule can then fall down into a capsule container.
  • It may be provided, in particular, that the second path is positioned further inwardly relative to the brewing chamber - that is, closer to the side of the second brewing module part than the first path. Then the capsule collar may be pulled during the opening of the brewing chamber from the brewing position across the first web away in the second path.
  • On the inside of the second path, for example, a second retention structure is provided which retains the capsule collar during the opening movement as soon as it has arrived in the second path. The retention force of this is then greater than the corresponding force of the return means, so that the collar passes from the receptacle of the return means on further opening. This can be effected, for example, by the fact that this retaining structure projects further radially inwards, forms a steeper angle to the axis and / or is more extensive. Additionally or alternatively, it may also be provided that the return means engage in the middle (with respect to the vertical) of the capsule collar, whereas the second retaining structure engages above and below. For a substantially cube or cuboid capsule, this means that the retention structure engages closer to the corners and edges of the capsule, where it presents more resistance to deformation than the return means.
  • The diversion device and the injector are preferably arranged opposite one another and have, for example, an extraction-side piercing device with at least one perforation element projecting into the brewing chamber or an injection-side piercing device, likewise with at least one perforation element projecting into the brewing chamber. The perforation elements are formed, for example, for piercing deep-drawn plastic capsule walls, for example of polypropylene with, for example, a thickness of between 0.2 mm and 0.5 mm or 0.4 mm, for example between 0.25 mm and 0.35 mm; as such, they may differ from means for perforating aluminum capsules. However, piercing devices for other capsule wall materials than thermoformed plastics may also be present.
  • In embodiments, the injector of the brewing module has a capsule seal, which surrounds the capsule along a circumferential lateral surface. In particular, the capsule seal may have a single sealing lip, which protrudes toward the location of the liquid injection. As an option, an inflow channel may be present in the injector which directs injected brewing water to the capsule seal even before the start of the brewing process and allows the seal - in particular the sealing lip - to be pressed against the lateral surface.
  • A capsule seal can also - as for example in WO 2012/045184 described - cause the holding and positioning of the capsule in the closed brewing chamber. The holding of the capsule in the brewing chamber by a circumferential seal has the advantage, among other things, of greater manufacturing tolerances, ie the elasticity of the capsule seal can accommodate inaccuracies in the relative positioning of the first and second brewing module parts.
  • Also on the extraction side (on the side of the diversion device) may optionally be present a seal. According to one alternative, however, the sealing of the capsule is not caused by such an additional seal, but by the sealing effect of the pressed against a non-elastic sealing surface capsule wall. The sealing surface may be a curved or flat surface, and the sealing effect be supported by a deformability of the hot during the brewing capsule wall.
  • Another optional feature relates to the mechanism for moving the second brewing module part relative to the first brewing module part (the relative movement may involve moving the second brewing module part and / or the first brewing module part relative to a stationary housing). According to one embodiment, a triggering movement - for example. An operating lever or an electric Drive, in each case with or without Getriebeüber- or -untersetzung - transferred to a knee lever, wherein a knee joint of the toggle lever is suppressed when closing, ie in the closed state of the brewing module on another side of that level, which by the respective outer axes of rotation of the arms the knee lever is defined, as in the open state of the brewing module.
  • Such over-pressing - in the closed state of the brewing module against a stop - has a self-locking effect: by the internal pressure generated during the brewing process the brewing module parts are pressed apart, whereby the toggle is pressed even more against the stop - the brewing chamber can not open automatically.
  • These optional features (lip seal with inflow channel, extraction-side sealing by non-elastic sealing surface, over-pressed toggle lever) - each in its own right or in combination - interact particularly favorably with the concept described above. However, they are also per se - also individually or in combinations - used in other brewing modules for an extraction device having a first brewing module part and a movable relative to this second brewing module part, wherein the first and the second brewing module part a discharge device for discharging an extraction product from a capsule with extraction material for the preparation of brewed beverages and an injector for introducing an extraction liquid into the capsule.
  • For example, according to a specific embodiment, the brewing chamber is designed to accommodate a capsule that conically widening in contrast to the prior art not to the diversion or injector side, but instead to a cuboid or cube-shaped capsule, for example. Under cuboid or cube-shaped understands here a shape that does not deviate so much from the geometrically exact cuboid or cube shape that they would be functionally very different; For example, the shape of a truncated pyramid with a rectangular or square base, wherein the adjacent to the base side surfaces with respect to the perpendicular to the base by only a small inclination angle α of, for example, at most 2 ° included. The cuboid or cube shape can have a peripheral collar-for example, in the form of a welding edge / a sweat brow-which, for example, protrudes laterally at most 1.5 mm and, for example, is offset from an end surface plane.
  • The brewing module is, as already mentioned, designed as a horizontal brewing module. However, this does not exclude that the brewing module as a whole can be arranged slightly tilted, for example. It may be downhill to the first brewing module part down. The inclination of the axis injector-deflector towards the horizontal is then preferably at most 15 °, in particular between 0 ° and 10 °.
  • In embodiments, the brewing chamber encloses the capsule completely, ie, the first brewing module part and the second brewing module part have elements that exactly match one another and in the closed position together form the brewing chamber. The wall parts formed by the first brewing module part and the wall parts formed by the second brewing module part can be sealed off from one another in the closed position, for example by a circumferential sealing seal. This sealing gasket may, for example, have a lip seal which is fastened to one of the brewing module parts and abuts against a surface of the other brewing module part when the brewing chamber is closed. A brewing chamber finished in this way allows rinsing of the extraction device or of the brewing module without having to insert a capsule - which is a significant advantage for the user. However, this excludes the use of a rinse or placeholder capsule during the rinse or Cleaning process - with a complete or incomplete brewing chamber - not off.
  • By such a closure seal the brewing chamber can be sealed in two stages. A first sealing step is formed by at least one capsule seal, which surrounds the capsule and prevent the introduced extraction liquid or the extracted extraction product from flowing past the capsule. This first sealing step seals the capsule against the injector or against the diversion device. As the second sealing step, the closure seal seals the brewing module parts against each other. On the one hand, it can serve as a supplementary seal during the brewing process. On the other hand, as mentioned, it can serve for sealing during a rinsing process.
  • In addition, the invention relates to a method for brewing a brewed beverage using a capsule. This is carried out, for example, with a brewing module or an extraction device of the type described above, and may comprise the steps:
    • Inserting a portion capsule with an extraction material, for example by a positioning insertion opening, such that a collar of the capsule is positioned on the first path and that the capsule rests on the support;
    • Closing the brewing chamber by moving the second brewing module part relative to the first brewing module part, such that the capsule is pierced at least by a perforation element of an injector formed by the first and / or the second brewing module part, whereby introduction openings are formed in the capsule;
    • Introducing an extraction fluid into the capsule through the inlet ports (eg, from hot water using a pump and optionally a valve);
    • Discharging the extraction liquid from the capsule through discharge openings formed by perforation elements of a discharge device formed by the first and / or the second brewing module part;
    • Following discharge, opening the brewing chamber by moving the second brewing module portion relative to the first brewing module portion whereby the capsule is pulled by the retrieval members away from the first brewing module portion until the collar is positioned along the second path and continuing the opening process until the capsule is removed Brewing chamber falls down.
  • The invention further relates to an extraction device, in particular a beverage preparation machine, for example. Coffee or tea, with a water tank or water connection, a water heater, a water pump and a brewing module of the type described, with water tank, water heater and water pump are connected to the brewing module, that heated water delivered by the pump can be introduced into the capsule through the injector.
  • Embodiments of the invention are described below with reference to drawings. In the drawings, like reference characters designate like or analogous elements. The drawings show partially corresponding elements from figure to figure in different scales. Show it:
    • FIG. 1 a view of a brewing module according to the invention;
    • FIG. 2 a sectional view of the brewing module;
    • FIG. 3 a view of parts of the closing mechanism of the brewing module;
    • FIG. 4 a detail too FIG. 3 which also shows a microswitch;
    • FIG. 5 a view of the injector and relative to this as in the open position of the brewing chamber positioned diverter;
    • FIGS. 6 and 7 ever another view of the diversion device;
    • FIG. 8 a sectional view of the capsule and parts of the diversion after the insertion of the capsule and before the closure of the brewing chamber - shown cut along a horizontal plane below the capsule center;
    • FIG. 9 a sectional view of parts of the capsule, the diverter and the injector during the closing of the brewing chamber - shown cut along a horizontal plane in the middle of the capsule;
    • Figures 10 . 11 and 12 one each FIG. 9 an analogous representation of the arrangement shown during various stages of opening the brewing chamber;
    • FIG. 13 a detail of the brewing module with open brewing chamber;
    • FIG. 14 in a sectional view a detail of the injector; and
    • FIGS. 15 and 16 each a sectional view of the diversion device
  • The brewing module according to Figures 1 and 2 has a Brühmodulgehäuse 1 and held by the housing or guided a discharge device 3 as the first Brühmodulteil and an injector 5 as a second Brühmodulteil. By an operating lever 6, the injector 5 between an open position in which the brewing chamber is open and the operating lever is up and a closed position in which the brewing chamber closed and the operating lever is folded down, relative to the housing and the first brewing module part movable. Figures 1 and 2 show the brewing module in the open position and with inserted capsule 10. For the insertion of the capsule 10 has an insertion opening 11 is present, which also determines the orientation of the capsule during insertion. By indicating the position of the capsule collar 21, the insertion opening also indicates the orientation of the capsule to be selected.
  • On the diversion device, lateral guide means 31 -formed as guide jaws-are present whose function will be described in more detail below.
  • The implementation of the lever tilting movement (the operating lever 6 is pivotable about an axis defined by pivot pin 7) in a translational movement of the injector 5, a toggle lever 8 is present. A lock-mounted on the lever locking head 9 is toothed for this purpose with one of the arms 8.1 of the toggle lever.
  • As in FIG. 3 Visible particularly well, the toggle lever is designed so that it forms a self-locking system by the toggle lever in the closed state of the brewing module, when the operating lever 6 is at the stop, is suppressed by a few degrees, ie knee joint, when the operating lever 6 at the bottom stop is, on the other side of that plane 13, which is defined by the respective outer axes of rotation of the arms 8.1, 8.2, as in the open state of the brewing module. Therefore, when the two brewing module parts are pressed apart during the brewing process, the toggle lever is pressed against a stop in the housing and can not open on its own.
  • It can still be what's in there FIG. 4 is shown, a microswitch 16 may be present, which is actuated by pressing the toggle lever to the stop and, for example, even the same can form the stop. The microswitch 16 which controls that certain operations - especially the brewing process itself - can take place only when the brewing chamber is closed.
  • Also, alternative arrangements of such a microswitch, in which each interrogates the closed state of the brewing chamber, are possible.
  • FIG. 5 shows - in a different orientation compared to the figures described above - the injector and the discharge device. FIGS. 6 and 7 show further views of the diversion device 3.
  • The lateral guide jaws 31 protrude from the head 30 of the diversion device 3 in the direction of the injector (ie, inward according to the terminology used herein). In the example shown, they are each divided into an upper and lower lateral guide jaw member with an interruption therebetween. By the lateral guide jaws 31 are defined an outer track 33 and an inner track 36. The outer and inner tracks are each defined by groove-like structures, which are designed to guide the collar 21 of the capsule (in the illustrated embodiment, the collar 21 is formed by a circumferential welding edge), wherein the tracks are dimensioned so that the collar of the capsule yet Game has and is not clamped. The outer guide track is positioned relative to the insertion opening 11 so that the collar 21 of the capsule inserted when the brewing chamber is open enters the outer track 33. On the underside of the outer track 33, a support 35 is formed, on which the collar 21 and / or another part of the capsule 10 comes to rest when it is inserted. The inner track 36, however, is open at the bottom.
  • In an alternative embodiment to the illustrated embodiment, the two grooves can be interchanged with each other - i. E. the first lane is then further out than the second lane.
  • In an alternative embodiment to the drawn embodiment, the return elements 61 can also intervene laterally from above and below instead of intervening between the guide jaw parts 31. In such a configuration, for example, in Fig. 5 the inner, arranged in the interior of the brewing chamber parts of the injector rotated by 90 ° to the Brühkammerachse.
  • The operation of the holding jaws and the interaction with return elements 61 of the injector 5 are based on FIGS. 8 to 12 described in more detail.
  • FIG. 8 shows a sectional view of the state after the capsule insertion. The collar 21 is located in the outer track. On the upper side, the outer retention structure supports the collar and prevents the capsule from tilting downwards and inwards, ie to the left in the marked orientation. Upon closure of the brewing chamber, the injector is moved toward the diverter and the return member slides into the gap between the upper and lower guide jaw members. The capsule is - taken by a capsule seal described in more detail below - taken a bit far and bspw. For example, by extraction-side perforation (extraction mandrels 39) already slightly pierced ( FIG. 9 ).
  • Subsequently, the brewing process takes place in which hot water is introduced under pressure into the capsule and the extraction product is discharged on the extraction side. For example, a puncture device 38 can be used for the removal, as it is the subject of the European patent application 13 185 359.0 is. Other piercing and diversion devices, for example according to WO 2010/118544 , are usable.
  • When opening the brewing chamber engages a driving part 62 of the return member 61 on the capsule collar 21 and thus pulls the capsule away from the extraction mandrels 39. Since the return element in the region of the entrainment part 62 projects further radially inwards than the outer retention structure 34, the return element also pulls the capsule collar over the outer track (FIG. FIG. 10 ). The capsule as a whole is slightly deformed, so that the - generally comparatively dimensionally stable - collar can easily escape radially inward. This may be facilitated by the fact that the capsule is generally still hot after the brewing process and therefore the capsule material is better deformable than at room temperature. However, the principle works even when the capsule has cooled down.
  • On the inner side of the inner track 36, an inner retaining structure 37 is formed. This protrudes further radially inward than the outer retention structure 34 and / or is formed at a steeper angle to the axis 20 and / or is more extensive and / or further up / down than the outer containment structure 34, so that retention (force that would have to be expended to forcibly pull the capsule over it) is greater than that of the outer retention structure 34.
  • The retention effect of the inner retention structure 36 is also greater than that (acting in the reverse direction) of Mitnahmepartie 62. In the illustrated embodiment, this mainly comes about that the driving part attacks on the central part of the capsule, the inner retention structure 36, however, above and below it and closer at the corners of the capsule. Since these as a whole bring about a deformation of the capsule more resistance than the middle part of the capsule, the latter deviates inwards and thus allows slippage of the driving part 62 (FIG. FIG. 11 ).
  • After the capsule retained by the inner retaining structure 36 is completely freed from the receptacle 5 formed by the injector ( FIG. 12 ), it can fall down into a capsule container.
  • It is not necessary that the outer trajectory 33 is defined by groove-like structures as in the illustrated example. On the contrary, under certain circumstances it is sufficient if an outer retention structure 34 is present on the upper side, which supports the collar 21 from the inside and thus prevents the capsule resting on the support from tipping inwards. Additionally or alternatively, the inner web may be defined only by retention structures of the type of inner containment structure 36.
  • A detail of the closure head 9 is in FIG. 13 illustrated. This forms a pivotal movement of the lever mitmachende cover 17, which prevents a user can engage in the mechanics of the brewing unit - thereby minimizing the risk of injury.
  • During the brewing process, the capsule is gripped by a capsule seal of the injector, which also holds it in position. This capsule seal can be formed as in WO 2012/045184 described; This publication is expressly referred to.
  • FIG. 14 shows the brewing module with a capsule seal 40 which in accordance with the principle WO 2012/045184 is formed as a single-lip seal, which is formed projecting towards the location of the liquid injection, so that the liquid pressure of the liquid admitted from the injection side additionally presses the sealing lip against the capsule.
  • The injector 5 has an injection-side piercing device 51 with a plurality of perforation elements 53.
  • A particular optional feature of the injector 5 is shown in FIG FIG. 14 also visible. This is a flow channel 41, which promotes a fluid flow towards the capsule seal 40, even if the capsule is pressed against the injector. By this measure, the capsule seal is already before the water has penetrated into the capsule - ie before the brewing - flowed.
  • A sealing of the capsule 10 against the discharge device works here optionally without separate extraction-side seal. Such a sealing is necessary for the from the capsule escaping Brühgetränk enters the pourer and can not drip past the capsule down. In the embodiment described here, according to a separate aspect of the invention on the extraction side a matched to the capsule shape sealing surface 32 is present, against which the capsule is pressed flat during the extraction process. In this case, this sealing surface made of a hard material - for example. Injection molded hard plastic or metal - be made, it being the capsule wall, which is deformable during the brewing process and sealingly pressed against the sealing surface 32.
  • Another optional feature of the injector 5 can be seen, for example, in Figures 1-3 , A 3/2-way valve 15 is attached by means of a geometry which is injected directly on the injector - ie the valve 15 is present directly on the injector and not as known from the prior art, for example. Via a hose or similar connected thereto. The 3/2-way valve has a pump-side connection (inlet), an injection-side connection (outlet) and a drip-water connection (alternative outlet). The 3/2-way valve is used as known per se, the discharge of the brewing chamber. In the non-actuated state of the brewing chamber is relieved by a path from the injection-side connection to the drip water connection is open. In the actuated state, the path from the inlet to the injection-side connection is free and the drip-water connection is blocked. After completion of the brewing process, the valve returns to the non-actuated state and allows the pressure reduction from the injection-side connection ago by dripping the water into a drip tray. In this case, the pump-side connection is blocked, which also prevents post-evaporation by a sudden pressure drop after the brewing process.
  • FIG. 15 shows a sectional view of the diversion device. In addition to the elements already described above can be seen a closure seal 70, which here as the capsule seal 40 is designed as a lip seal. This is in the closed state of the brewing chamber to the housing of the injector 5 and is pressed upon application of pressure against them. This seals the brewing chamber and prevents water leakage even if - for example. For a rinsing - no capsule is inserted.
  • Also in FIG. 15 Visible is a flexible nozzle 81 arranged behind the extraction-side piercing device 38. This can, for example, consist of silicone or another food-compatible and elastic material and have a nozzle opening of, for example, between 0.15 mm and 0.4 mm, in particular between 0.2 mm and 0.3 mm.
  • Such a nozzle has, inter alia, the effect that the broth is additionally foamed, so that the formation of the popular "crema" is favored.
  • FIG. 16 also shows parts of the diversion device 3 in a sectional view in which, in addition to the nozzle 81, the pourer 83 for the brewing beverage is also visible. FIG. 18 also shows an optional form of the flexible nozzle 81: on the inlet side, this has an area which narrows towards the nozzle opening and channels the liquid flow.

Claims (15)

  1. A brewing module for an extraction device, comprising a first brewing module part (3) and a second brewing module part (5) movable relative thereto, the first and second brewing module parts having a discharge device for discharging an extraction product from a capsule (10) with brewed beverage preparation and an injector for introducing an extraction fluid into the capsule (10), the first brewing module part having a head (30) with lateral guide means (31) comprising a first track (33) and a second track (36) for a capsule collar (Fig. 21), and wherein the first brewing module part (3) further forms a support (35) which limits downward movement of the capsule (10) when the capsule collar is on the first path, characterized in that the lateral guide means (35) 31) are connected to the head and that the second brewing module part has a return means (61), which is adapted to the Opening the brewing chamber on the capsule collar (21) attack and move this in the second path (36).
  2. Brewing module according to claim 1, characterized in that the lateral guide means (31) are arranged so that they are arranged with closed brewing chamber within the brewing chamber.
  3. Brewing module according to claim 1 or 2, characterized in that the lateral guide means (31) are in closed brewing chamber in contact with the capsule (10).
  4. Brewing module according to one of the preceding claims, characterized in that, when the brewing chamber is closed, the return means (61) are in engagement with the capsule (10).
  5. Brewing module according to one of the preceding claims, characterized in that the lateral guide means (31) are rigidly connected to the head (30).
  6. Brewing module according to one of the preceding claims, characterized in that the return means (61) is rigidly connected to a housing of the second brewing module part (5).
  7. Brewing module according to one of the preceding claims, characterized by a second retaining structure (37) which is subsequently arranged on the second web (36).
  8. Brewing module according to one of the preceding claims, characterized in that the second path (36) is located farther in relation to the brewing chamber than the first path (33).
  9. Brewing module according to one of the preceding claims, characterized in that the lateral guide means (31) per side each have two guide means and the return means (61) engage in the closed state of the brewing chamber between the guide means.
  10. Brewing module according to one of the preceding claims, characterized in that the injector has a capsule seal (40) which engages around the capsule along a circumferential lateral surface.
  11. Brewing module according to claim 10, characterized in that the capsule seal (40) has a single sealing lip , which is designed projecting towards a location of the liquid injection.
  12. Brewing module according to claim 9 or 10, characterized by an inflow channel (41) in the injector, which directs injected brewing water to the capsule seal (40) even before the start of the brewing process and allows the seal to be pressed against the lateral surface.
  13. Brewing module according to one of the preceding claims, characterized by a mechanism for converting a triggering movement into a movement of the second brewing module part (5) relative to the first brewing module part (3), said mechanism comprising a toggle lever (8) with two toggle lever arms (8.1, 8.2) depending on an outer axis of rotation and a common knee joint, wherein the knee joint is in the closed state of the brewing chamber on another side of that level, which leads through the respective outer axes of rotation of the toggle lever arms (8.1, 8.2) than in the open state of the brewing chamber.
  14. Extraction device, comprising a water tank or water connection, a water heater, a water pump and a brewing module according to any one of the preceding claims, wherein the water tank, water heater and water pump are connected to the brewing module, that heated by the pump pumped heated water can be introduced through the injector into the capsule ,
  15. A method of brewing a brewed beverage using a capsule (10) filled with an extraction stock and a brewing module according to any one of claims 1 to 13, comprising the steps of:
    Inserting a portion capsule through an insertion opening (11) such that a collar (21) of the capsule is positioned on the first panel (33) and the capsule rests on the support (35);
    Closing the brewing chamber by moving the second brewing module part (5) relative to the first brewing module part (3), such that the capsule (10) is pierced at least by a perforation element of an injector formed by the first and / or the second brewing module part, whereby introducing openings in the capsule arise;
    Introducing an extraction liquid into the capsule through the inlet openings;
    Discharging an extraction liquid formed in the capsule from the capsule through discharge openings which have been produced by perforation elements of a discharge device formed by the first and / or the second brewing module part;
    Following the discharge, opening the brewing chamber by moving the second brewing module portion relative to the first brewing module portion, thereby pulling the capsule away from the first brewing module portion by the retrieval members until the collar (21) is positioned along the second panel (36) and continuing the brewing Opening process until the capsule (10) from the open brewing chamber falls down.
EP13186920.8A 2013-10-01 2013-10-01 Brewing module Withdrawn EP2856917A1 (en)

Priority Applications (1)

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Applications Claiming Priority (19)

Application Number Priority Date Filing Date Title
EP13186920.8A EP2856917A1 (en) 2013-10-01 2013-10-01 Brewing module
PL14781046T PL3051986T3 (en) 2013-10-01 2014-09-29 Brewing module
AU2014331506A AU2014331506B2 (en) 2013-10-01 2014-09-29 Brewing module
US15/026,034 US10307011B2 (en) 2013-10-01 2014-09-29 Brewing module and method of using same
KR1020167011572A KR20160063392A (en) 2013-10-01 2014-09-29 Brewing module
LTEP14781046.9T LT3051986T (en) 2013-10-01 2014-09-29 Brewing module
JP2016519363A JP6541651B2 (en) 2013-10-01 2014-09-29 Export module
CA2925036A CA2925036A1 (en) 2013-10-01 2014-09-29 Brewing module
EP14781046.9A EP3051986B1 (en) 2013-10-01 2014-09-29 Brewing module
BR112016006538A BR112016006538A2 (en) 2013-10-01 2014-09-29 infusion module
PCT/CH2014/000138 WO2015048914A1 (en) 2013-10-01 2014-09-29 Brewing module
DK14781046.9T DK3051986T3 (en) 2013-10-01 2014-09-29 brew Module
RU2016116097A RU2663405C2 (en) 2013-10-01 2014-09-29 Brewing module
HUE14781046A HUE035650T2 (en) 2013-10-01 2014-09-29 Brewing module
PT147810469T PT3051986T (en) 2013-10-01 2014-09-29 Brewing module
NO14781046A NO3051986T3 (en) 2013-10-01 2014-09-29
SG11201602470VA SG11201602470VA (en) 2013-10-01 2014-09-29 Brewing module
ES14781046.9T ES2645439T3 (en) 2013-10-01 2014-09-29 Scalding module
CN201480053670.8A CN105658121B (en) 2013-10-01 2014-09-29 Brew module

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EP2856917A1 true EP2856917A1 (en) 2015-04-08

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JP (1) JP6541651B2 (en)
KR (1) KR20160063392A (en)
CN (1) CN105658121B (en)
AU (1) AU2014331506B2 (en)
BR (1) BR112016006538A2 (en)
CA (1) CA2925036A1 (en)
DK (1) DK3051986T3 (en)
ES (1) ES2645439T3 (en)
HU (1) HUE035650T2 (en)
LT (1) LT3051986T (en)
NO (1) NO3051986T3 (en)
PL (1) PL3051986T3 (en)
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RU (1) RU2663405C2 (en)
SG (1) SG11201602470VA (en)
WO (1) WO2015048914A1 (en)

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EP3051986B1 (en) 2017-09-13
US20160242591A1 (en) 2016-08-25
RU2016116097A3 (en) 2018-05-31
DK3051986T3 (en) 2018-01-02
HUE035650T2 (en) 2018-05-28
PT3051986T (en) 2017-12-07
AU2014331506A1 (en) 2016-04-14
CN105658121B (en) 2019-06-28
RU2663405C2 (en) 2018-08-03
SG11201602470VA (en) 2016-04-28
AU2014331506B2 (en) 2017-11-02
LT3051986T (en) 2017-12-11
CN105658121A (en) 2016-06-08
PL3051986T3 (en) 2018-03-30
KR20160063392A (en) 2016-06-03
EP3051986A1 (en) 2016-08-10
JP2016536037A (en) 2016-11-24
RU2016116097A (en) 2017-11-13
ES2645439T3 (en) 2017-12-05
JP6541651B2 (en) 2019-07-10
US10307011B2 (en) 2019-06-04
WO2015048914A1 (en) 2015-04-09
BR112016006538A2 (en) 2017-08-01
NO3051986T3 (en) 2018-02-10
CA2925036A1 (en) 2015-04-09

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